Non-skidding device.



H. J. HERNSHEIM. NON-SKIDDING DEVICE.

APPLICATION FILED 001'. a, 1912 1,071,418. Patented Aug. 26, 1913;

HJ/femsheim UNITED PATENT OFFICE- HARRY J. .HERNSHE I M, or r EAsANrrRA ImE, Wisconsin.

NON-SKIDDING DEVICE.

Specification of Letters Patent. Patented A 26 1913.

Application filed October 8, 1912. Serial No. 724,574.

To all whom it may concern:

Be it'known that I, HARRY J HERNSHEIM, citizen of the United states residing at Pleasant Prairie, in the county of Kenosha and State of Wisconsin, have invented new and useful Improvements in Non-Skidding Devices, of which the following is a specification.

This invention relates to anti-skidding (19-; vices for use-upon the wh'eels of automobiles, motor trucks, andother self-propelled vehicles, the object in view being to provide what is ordinarily known as an anti-skldding chain, embodying novel construction of traction rib 1, extending transversely of the vents lateral or side skidding.

essary.

anti-skid units con'nected up by chains arrangedat opposite'sides thereof adapting the device as awhole to .be applied to the tire of awheel, thedevice serving in-a double capacity, in that it provides for the hecv essary traction of thewheel and also pre-' The device is designedfor use upon slippery roads, and'ma be easily applied to and removed from a whel, as may be found nec- With the above and other objects in view,

the invention consists in the; construction, combination and'arrangement of parts, as

will behereinafter more' fully described, illustrated-in the accompanying drawings, and pointed out in the claim hereunto ap; pended. j

- In the drawings Figure 1 is a side. elevation' of a portion of'a' wheel showing the anti-skid deviceapplied thereto; Fig. 2 is an enlarged plan'view .of several connected units. Fig. 3 'is a perspectlve view of one unit.

The anti-skiddin S device -contemplated in this invention comprisesa continuous serles of anti-skid-units A connected-together by parallel side chains B, said chains being indirectly connected to the units by short transverse chains or flexibleconnections C. which facilitate applying-the device as a whole to a tire and removing th same there from. v v Eachanti-skid unit A; comprises a centraltire, when in placethereomto give the necessary tractive properties to the wheel.

In addition to the central traction rib 1,

each unitcomprises sets of parallel anti-skid ribs 2 arranged at opposite sides of the central traction rib and parallel' or substantially so to each. other, and out of contact- With the central rib, so as ,to allow ice, mud and the hire to escape from between theribs to 'preventclogging' the device as a whole,-

and to keep the same in perfect operative condit on at all times. The unit as a whole is preferably formedin one piece, and made from,a .drop forging, and, in the formation of the'iinit,' a1l of the ribs are provided with relatively wide. or broad baseflanges 3, thereby avoiding any possibility of injury to that portion of the tire with-which the unit comes in contact.

, It will be observed that the ribs 2 extend may be resortedto by the manufacturer,

without departing from the principle or sacs tion.

What is claimed is;

rificing any of the advantages of the inven- An anti-skid unit, comprising a baseshaped in plan to resemble the letter'H, said .unit embodying a central traction rib projecting from the base and extending transversely with relation to .the tread surface of the tire, and sets ofparallel anti-skid ribs also projectingfroiiftlie base and arranged at the front and rear ofthe traction rib and in spaced relation thereto and to each other,

said anti-skid ribs extending circumferent-ially of the tread surface ofthetire.

In testimony whereof I affix my signature I 'inpresence of'two witnesses.

. HARRY J. HERNSHEIM. Witnesses:

W. H. PURNELL, Orms'. 0. BROWN.

points 

